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Test: Frequency Response & Resonance- 2 - Electrical Engineering (EE) MCQ


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15 Questions MCQ Test Topicwise Question Bank for Electrical Engineering - Test: Frequency Response & Resonance- 2

Test: Frequency Response & Resonance- 2 for Electrical Engineering (EE) 2024 is part of Topicwise Question Bank for Electrical Engineering preparation. The Test: Frequency Response & Resonance- 2 questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Frequency Response & Resonance- 2 MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Frequency Response & Resonance- 2 below.
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Test: Frequency Response & Resonance- 2 - Question 1

A series RLC circuit consist of resistance of 10 ohms, an inductance of 0.1 H and a capacitance of 0.001 μF. The frequency at resonance is

Detailed Solution for Test: Frequency Response & Resonance- 2 - Question 1


Test: Frequency Response & Resonance- 2 - Question 2

Which of the following Is not true for a series RLC resonant circuit?

Detailed Solution for Test: Frequency Response & Resonance- 2 - Question 2


When Δω increases, selectivity decreases and vice-versa.
Also, Vc|max occurs at,

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Test: Frequency Response & Resonance- 2 - Question 3

The half-power frequencies of a series resonant circuit where the resonant frequency is 150 x 103 Hz and the bandwidth is 75 kHz will be respectively given by

Detailed Solution for Test: Frequency Response & Resonance- 2 - Question 3

Given, Δf = 75 kHz = f2 - f1...(i)

On solving equations (i) and (ii), we get
f= 117 kHz and f2 = 192 kHz 

Test: Frequency Response & Resonance- 2 - Question 4

For the tank circuit shown below, the circulating current at resonance is given by

Detailed Solution for Test: Frequency Response & Resonance- 2 - Question 4

At resonance, XL = XC
∴ IL = IC (for parallel resonant circuit)
Hence, 

or, 

or, 

(IL=IC = circulating current)

Test: Frequency Response & Resonance- 2 - Question 5

The value of RC in the circuit shown below to yield resonance will be

Detailed Solution for Test: Frequency Response & Resonance- 2 - Question 5

Here,
 
At resonance,
Img [Y] = 0
or, 

Test: Frequency Response & Resonance- 2 - Question 6

A resonating circuit has 10ft resistance, if the supply is 10 Ω, the power at half power frequency will be

Detailed Solution for Test: Frequency Response & Resonance- 2 - Question 6

At resonance,

Now, power at half power frequency

Test: Frequency Response & Resonance- 2 - Question 7

For the circuit shown below, what are the values of R1, and R2 so that the circuit will resonate at all frequencies?

Detailed Solution for Test: Frequency Response & Resonance- 2 - Question 7

For the given circuit to resonate at all frequency,


Note: Resonant frequency of given circuit is

Thus, 

Test: Frequency Response & Resonance- 2 - Question 8

The value of current I1 in the circuit shown below is

Detailed Solution for Test: Frequency Response & Resonance- 2 - Question 8

Since XL = XL, therefore given circuit will be at resonance
∴ I= 100/5 = 20 A

Test: Frequency Response & Resonance- 2 - Question 9

The transfer function  of the network shown below is

Detailed Solution for Test: Frequency Response & Resonance- 2 - Question 9

The given circuit in s-domain is shown below.

Now, 

and 

So, 



or, 

Test: Frequency Response & Resonance- 2 - Question 10

The poles and zeros of the transfer function  for the circuit shown below are located at

Detailed Solution for Test: Frequency Response & Resonance- 2 - Question 10



or, 

or, 


Thus, there is no-zero for T.F.  


Poles are at:
2s2 + 200s + 1 = 0
or, 

or, 

= -100 ±99.99
= 0 or -200
Hence, poles are at: s = 0, -200

Test: Frequency Response & Resonance- 2 - Question 11

The output of a linear system for a unit step input is given by t2 e-t. The transfer function is given by

Detailed Solution for Test: Frequency Response & Resonance- 2 - Question 11

Given, C(t) = t2e-t

Test: Frequency Response & Resonance- 2 - Question 12

A constant voltage but variable frequency ac source feeds L and C in parallel as shown below:

The impedance seen by source is Z
1. Z is zero when f = 0.
2. Z is zero when f = infinity.
3. Z is infinite when f = 0.
4. Z is infinite when f = infinity.
5. resonant frequency, 

From above, the correct answer is

Detailed Solution for Test: Frequency Response & Resonance- 2 - Question 12

Resonant frequency,

Also, 


When f = 0, ω = 0 and z = 0.
When f = ∞, co = ∞ and z= 0.

Test: Frequency Response & Resonance- 2 - Question 13

Match List- I (Types of filters) with List- II (Attenuation band) and select the correct answer using the codes given below the lists:
List -I
A. Low pass
B. High pass
C. Band pass
D. Band stop

List-II
1. 0 → f2, f1 → ∞
2. fc → ∞
3. f1 → f2
4. 0 → fc

Codes:

Test: Frequency Response & Resonance- 2 - Question 14

The transfer function is for an active

Detailed Solution for Test: Frequency Response & Resonance- 2 - Question 14

When s → 0 , H (0) → 0
When s → ∞, H(∞) → 0
Hence, given T.F. is for a band pass filter.

Test: Frequency Response & Resonance- 2 - Question 15

Match List- I (Transfer function) with List- II (Type of filter) and select the correct answer using the codes given below the lists:

Codes:

Detailed Solution for Test: Frequency Response & Resonance- 2 - Question 15

Putting s → 0 and s → ∞ we can find the type of the filter.

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